Asterix

Asterix Why are Goscinny & Uderzo so confused about Asterix and Obelix's bdays?

If you all remember in 'Obelix and co',Obelix's bday is celebrated.OK even if the romans were only for Ob,they would have had something for Asterix.But they didn't which means Goscinny never intended their bdays to be the same.But in 'Asterix and the Actress'&'Asterix and the Class Act' Asterix and Obelix's bdays are the SAME!!!!!!!If u don't believe me check out these 3 comics